diff --git a/src/SMESH_I/SMESH_PreMeshInfo.hxx b/src/SMESH_I/SMESH_PreMeshInfo.hxx
index 38b15a242..f92ce96c3 100644
--- a/src/SMESH_I/SMESH_PreMeshInfo.hxx
+++ b/src/SMESH_I/SMESH_PreMeshInfo.hxx
@@ -52,7 +52,7 @@ class SMESH_Mesh_i;
 class SMESH_PreMeshInfo : public SMDS_MeshInfo
 {
 public:
-  // fills SMESH_PreMeshInfo field of all objects of mesh
+  // fills SMESH_PreMeshInfo* field of all objects of mesh
   static void LoadFromFile( SMESH_Mesh_i*      mesh,
                             const int          meshID,
                             const std::string& medFile,
@@ -64,6 +64,9 @@ public:
                           const int     meshID,
                           HDFfile*      hdfFile);
 
+  // remove all SMESH_PreMeshInfo fields from mesh and its child objects w/o data loading
+  static void ForgetAllData( SMESH_Mesh_i* mesh );
+
   // reads all data and remove all SMESH_PreMeshInfo fields from objects
   void FullLoadFromFile() const;